I Want My Ex Back:
Self Improvement:
Learn Patience

Every relationship requires patience and compromise. No two people are EVER perfectly matched - there are always differences that need to be worked out. If you were getting angry and raising your voice, or exasperated, it's time to work on that.

There are many tips on this site on building up patience and dealing with conflict. Read them and PRACTICE them. Patience is a skill that is necessary for all of life - not just for getting an ex back.